static private MIDIEvent ReadEvent(int deltaTicks)
{
MIDIEvent midiEvent = null;
if (IsSysExEvent())
{
DiscardSysExEvent();
}
else if (IsMetaEvent())
{
midiEvent = ReadMetaEvent(deltaTicks);
}
else
{
// Handle running status
// (the status byte is omitted if the current event is supposed to have the same status as the last event)
if ((m_status & 0b10000000) == 0)
{
m_status = m_prevStatus;
m_index--;
}
midiEvent = ReadChannelEvent(deltaTicks);
m_prevStatus = m_status;
}
return(midiEvent);
}
private void NotifyEvent(MIDIEvent midiEvent, int trackNumber)
{
foreach (MIDISongListener m_songListener in m_songListeners)
{
m_songListener.OnSongEvent(midiEvent, trackNumber);
}
}
private void NotifyEvent(MIDIEvent midiEvent)
{
foreach (MIDIDeviceListener deviceListener in m_deviceListeners)
{
deviceListener.OnDeviceEvent(midiEvent);
}
}
static private void ReadTrack()
{
MIDITrack track = new MIDITrack();
track.events = new List <MIDIEvent>();
string trackChunkType = ReadString(4);
if (!trackChunkType.Equals("MTrk"))
{
throw new System.FormatException("No track chunk type has been found.");
}
int trackChunkLength = ReadInt32();
uint trackChunkEnd = m_index + (uint)trackChunkLength;
int accumulatedDeltaTicks = 0;
m_prevStatus = 0;
while (m_index < trackChunkEnd)
{
int deltaTicks = ReadVariableLengthInt();
accumulatedDeltaTicks += deltaTicks;
m_status = ReadByte();
MIDIEvent midiEvent = ReadEvent(accumulatedDeltaTicks);
if (midiEvent != null)
{
track.events.Add(midiEvent);
accumulatedDeltaTicks = 0;
}
}
m_song.tracks.Add(track);
}
MIDINote ParseNoteOffEvent(FileStream inFile, MIDIEvent midi_event)
{
MIDINote note;
if (inFile != null)
{
note = new MIDINote(midi_event);
note.note = (UInt32)inFile.ReadByte();
note.velocity = (UInt32)inFile.ReadByte();
}
else
{
note = (MIDINote)midi_event;
}
if (this.currentNotes.ContainsKey(note.note))
{
this.currentNotes[note.note].duration = CurrentTime() - note.absoluteStartTime;
this.currentNotes.Remove(note.note);
}
else
{
Debug.LogWarning("try to access not existing note: " + note.note);
}
return(note);
}
/// <summary>
/// MIDIデータに歌詞を追加します。
/// </summary>
private void MakeLyric(MIDITrack midiTrack, List <MeasureAndTextBox> measures)
{
RemoveLyric(midiTrack);
foreach (MeasureAndTextBox measure in measures)
{
StringBuilder stringBuilder = new StringBuilder(measure.Lyric);
for (int i = 0; i < measure.MidiEvent.Length; i++)
{
if (stringBuilder.Length <= 0)
{
break;
}
string lyricChar = stringBuilder[0].ToString(); //先頭の文字を取得
stringBuilder.Remove(0, 1); //先頭の文字を削除
//次の文字が小文字の場合、一緒に歌詞に含める。
if (IsFirstCharacterLowerCase(stringBuilder.ToString()))
{
lyricChar += stringBuilder[0].ToString(); //先頭の文字を追加
stringBuilder.Remove(0, 1); //先頭の文字を削除
}
MIDIEvent targetEvent = measure.MidiEvent[i];
MIDIEvent lyricEvent = MIDIEvent.CreateLyric(targetEvent.Time, lyricChar);
midiTrack.InsertEventAfter(lyricEvent, targetEvent);
}
}
}
void ParseSysexEvent(FileStream inFile, MIDIEvent midi_event)
{
int length = ParseVarLen(inFile);
byte[] data = new byte[length];
inFile.Read(data, 0, length);
Array.Reverse(data);
midi_event.data = data;
}
private void noteOn(MIDIEvent evnt)
{
if (evnt.data[1] != 00)
{
note[evnt.data[0]].Add(evnt);
}
else
{
noteOff(evnt);
}
}
static private void CorrectDeltaTicksOfNextEvents(MIDIEvent minNextEvent, List <MIDIEvent> nextEventList)
{
for (int i = 0; i < m_song.tracks.Count; i++)
{
MIDIEvent nextEvent = nextEventList[i];
if (nextEvent == null || nextEvent == minNextEvent)
{
continue;
}
nextEvent.deltaTicks -= minNextEvent.deltaTicks;
}
}
void MIDIDeviceListener.OnDeviceEvent(MIDIEvent midiEvent)
{
if (midiEvent.GetType() == typeof(MIDINoteEvent))
{
MIDINoteEvent noteEvent = midiEvent as MIDINoteEvent;
if (noteEvent.isNoteOn && m_hoveredGameObject != null)
{
ARButton arButton = m_hoveredGameObject.GetComponent(typeof(ARButton)) as ARButton;
if (arButton != null)
{
arButton.Click(noteEvent.note);
}
}
}
}
void FlushEvent(MIDIEvent e)
{
if (!flushBuffer.TryAdd(e))
{
flusherTask.GetAwaiter().GetResult();
RunFlusherTask();
flushBuffer.Add(e);
}
if (flushBuffer.Count > halfBuffLen)
{
if (flusherTask == null || flusherTask.IsCompleted)
{
RunFlusherTask();
}
}
}
void MIDISongListener.OnSongEvent(MIDIEvent midiEvent, int trackNumber)
{
if (!m_isEnabled)
{
return;
}
if (!m_isRightHandEnabled && trackNumber == 0)
{
return;
}
if (!m_isLeftHandEnabled && trackNumber == 1)
{
return;
}
if (midiEvent.GetType() == typeof(MIDINoteEvent))
{
MIDINoteEvent noteEvent = midiEvent as MIDINoteEvent;
if (noteEvent.isNoteOn)
{
bool pressedEarlyNote = false;
foreach (MIDINoteEvent earlyPressedNote in m_earlyPressedNotes)
{
if (earlyPressedNote.note == noteEvent.note)
{
m_earlyPressedNotes.Remove(earlyPressedNote);
pressedEarlyNote = true;
break;
}
}
if (!pressedEarlyNote)
{
m_pendingNotes.Add(noteEvent, trackNumber);
if (m_pendingNotes.Count == 1)
{
m_songPlayer.Sleep();
}
}
}
}
}
void PushNoteEv(MIDIEvent n)
{
notesTime += n.DeltaTime;
parser.ParseUpTo(notesTime);
if (n is NoteOnEvent)
{
notesWritten++;
}
while (evTime <= notesTime)
{
if (currentEv == null)
{
if (otherEvents.TryTake(out currentEv))
{
currentEv = currentEv.Clone();
evTime += currentEv.DeltaTime;
if (evTime <= notesTime)
{
currentEv.DeltaTime = (uint)(evTime - time);
FlushEvent(currentEv);
currentEv = null;
time = evTime;
}
else
{
break;
}
}
else
{
break;
}
}
else
{
currentEv.DeltaTime = (uint)(evTime - time);
FlushEvent(currentEv);
currentEv = null;
time = evTime;
}
}
n.DeltaTime = (uint)(notesTime - time);
FlushEvent(n);
time = notesTime;
}
static private void ForwardMinNextEvent(MIDIEvent minNextEvent, List <MIDIEvent> nextEventList)
{
for (int i = 0; i < m_song.tracks.Count; i++)
{
MIDITrack track = m_song.tracks[i];
int nextEventIndex = track.events.IndexOf(minNextEvent);
if (nextEventIndex == -1)
{
continue;
}
nextEventList[i] = null;
nextEventIndex++;
if (nextEventIndex < track.events.Count)
{
nextEventList[i] = track.events[nextEventIndex];
}
}
}
MIDIEvent ParseChannelEvent(FileStream inFile, MIDIEvent midi_event)
{
int event_type_mask = (midi_event.event_type & 0xF0);
//int event_channel = (midi_event.event_type & 0x0f) + 1;
var midi_event_new = midi_event;
switch (event_type_mask)
{
case (int)MIDI_EVENT_TYPES.NOTE_ON:
Debug.Log("note on");
midi_event_new = ParseNoteOnEvent(inFile, midi_event);
break;
case (int)MIDI_EVENT_TYPES.NOTE_OFF:
midi_event_new = ParseNoteOffEvent(inFile, midi_event);
Debug.Log("note off");
break;
case (int)MIDI_EVENT_TYPES.NOTE_AFTERTOUCH:
Debug.Log("after touch");
break;
case (int)MIDI_EVENT_TYPES.CONTROLLER:
Debug.Log("controller");
break;
case (int)MIDI_EVENT_TYPES.PROGRAM_CHANGE:
Debug.Log("program change");
break;
case (int)MIDI_EVENT_TYPES.CHANNEL_AFTERTOUCH:
Debug.Log("channel aftertouch");
break;
case (int)MIDI_EVENT_TYPES.PITCH_BEND:
Debug.Log("pitchbend");
break;
}
return(midi_event_new);
}
static private MIDIEvent FindMinNextEvent(List <MIDIEvent> nextEventList)
{
int minDeltaTicks = 99999999;
MIDIEvent minNextEvent = null;
for (int i = 0; i < m_song.tracks.Count; i++)
{
MIDIEvent nextEvent = nextEventList[i];
if (nextEvent == null)
{
continue;
}
if (nextEvent.deltaTicks < minDeltaTicks)
{
minDeltaTicks = nextEvent.deltaTicks;
minNextEvent = nextEvent;
}
}
return(minNextEvent);
}
protected void MergeAudioEvents()
{
int count = LoaderSettings.EventPlayerThreads;
MIDINoteEvents = new MIDIEvent[count][];
Parallel.For(0, count, new ParallelOptions()
{
CancellationToken = cancel
}, i =>
{
try
{
MIDINoteEvents[i] = TimedMerger <MIDIEvent> .MergeMany(parsers.Select(p => new SkipIterator <MIDIEvent>(p.NoteEvents, i, count)).ToArray(), e =>
{
return(e.time);
}).ToArray();
}
catch (OperationCanceledException)
{
}
});
}
public void Update(float deltaTime)
{
if (m_isPlaying && !m_isSleeping)
{
deltaTime = deltaTime * m_speedFactor;
NotifyUpdate(deltaTime);
m_elapsedTime += deltaTime;
CalcCurrentMeasure();
for (int i = 0; i < m_song.tracks.Count; i++)
{
MIDITrack track = m_song.tracks[i];
bool processedAllEventsWithCurrentTimestamp = false;
while (!processedAllEventsWithCurrentTimestamp)
{
int nextEventIndex = m_nextEventIndexList[i];
if (nextEventIndex >= track.events.Count)
{
break;
}
MIDIEvent nextEvent = track.events[nextEventIndex];
if (nextEvent.timestamp <= m_elapsedTime)
{
NotifyEvent(nextEvent, i);
m_nextEventIndexList[i]++;
}
else
{
processedAllEventsWithCurrentTimestamp = true;
}
}
}
}
}
void MIDIDeviceListener.OnDeviceEvent(MIDIEvent midiEvent)
{
if (!m_isEnabled)
{
return;
}
if (midiEvent.GetType() == typeof(MIDINoteEvent))
{
MIDINoteEvent noteEvent = midiEvent as MIDINoteEvent;
if (noteEvent.isNoteOn)
{
bool pressedPendingNote = false;
foreach (var pendingNote in m_pendingNotes)
{
if (pendingNote.Key.note == noteEvent.note)
{
m_pendingNotes.Remove(pendingNote.Key);
pressedPendingNote = true;
if (m_pendingNotes.Count == 0)
{
m_songPlayer.WakeUp();
}
break;
}
}
if (!pressedPendingNote)
{
noteEvent.timestamp = 0.0f;
m_earlyPressedNotes.Add(noteEvent);
}
}
}
}
MIDINote ParseNoteOnEvent(FileStream inFile, MIDIEvent midi_event)
{
MIDINote note = new MIDINote(midi_event);
note.note = (UInt32)inFile.ReadByte();
note.velocity = (UInt32)inFile.ReadByte();
note.absoluteStartTime = CurrentTime();
Debug.Log(midi_event);
if (note.velocity == 0) // note off
{
ParseNoteOffEvent(null, note);
}
else
{
if (!currentNotes.ContainsKey(note.note))
{
currentNotes.Add(note.note, note);
}
}
return(note);
}
MIDITrack ParseTrack(FileStream inFile)
{
MIDITrack track = new MIDITrack();
// MThd
{
byte[] _mtrk = new byte[4];
inFile.Read(_mtrk, 0, 4);
Array.Reverse(_mtrk);
track.MTrk = BitConverter.ToUInt32(_mtrk, 0);
if(track.MTrk != (UInt32)MIDI_EVENT_TYPES.TRACK_CHUNK_ID){
throw new Exception("wrong track header");
}
}
// track length
{
byte[] _len = new byte[4];
inFile.Read(_len, 0, 4);
Array.Reverse(_len);
track.track_length = BitConverter.ToUInt32(_len, 0);
}
// start reading events
long pos = inFile.Position;
this.timeOffset = 0;
while(inFile.Position < pos + track.track_length){
int deltaTime = ParseVarLen(inFile);
this.timeOffset += deltaTime;
MIDIEvent midi_event = new MIDIEvent();
midi_event.delta_time = deltaTime;
midi_event.event_type = inFile.ReadByte();
switch(midi_event.event_type){
case (int)MIDI_EVENT_TYPES.META_EVENT:
ParseMetaEvent(inFile, midi_event);
// Debug.Log("Meta event");
break;
case (int)MIDI_EVENT_TYPES.SYSEX_EVENT:
case (int)MIDI_EVENT_TYPES.SYSEX_CHUNK:
ParseSysexEvent(inFile, midi_event);
// Debug.Log("Sysex event");
break;
default:
midi_event = ParseChannelEvent(inFile, midi_event);
// Debug.Log("channel event");
break;
}
Debug.Log(midi_event);
track.events.Add(midi_event);
}
return track;
}
public MIDINote(MIDIEvent e)
{
this.delta_time = e.delta_time;
this.data = e.data;
this.event_type = e.event_type;
}
MIDINote ParseNoteOnEvent(FileStream inFile, MIDIEvent midi_event)
{
MIDINote note = new MIDINote(midi_event);
note.note = (UInt32)inFile.ReadByte();
note.velocity = (UInt32)inFile.ReadByte();
note.absoluteStartTime = CurrentTime();
Debug.Log(midi_event);
if(note.velocity == 0){ // note off
ParseNoteOffEvent(null, note);
}else{
if(!currentNotes.ContainsKey(note.note)){
currentNotes.Add(note.note, note);
}
}
return note;
}
void ParseSysexEvent(FileStream inFile, MIDIEvent midi_event)
{
int length = ParseVarLen(inFile);
byte[] data = new byte[length];
inFile.Read(data, 0, length);
Array.Reverse(data);
midi_event.data = data;
}
void ParseMetaEvent(FileStream inFile, MIDIEvent midi_event)
{
int type = inFile.ReadByte();
midi_event.event_type = type;
byte[] data;
switch(type){
case (int)MIDI_EVENT_TYPES.SEQ_NUMBER:
midi_event.data = ParseMetaValue(inFile);
break;
case (int)MIDI_EVENT_TYPES.TEXT:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.COPYRIGHT:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.SEQ_NAME:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.INSTRUMENT_NAME:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.LYRICS:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.MARKER:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.CUE_POINT:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.CHANNEL_PREFIX:
midi_event.data = ParseMetaValue(inFile);
break;
case (int)MIDI_EVENT_TYPES.END_OF_TRACK:
midi_event.data = ParseMetaData(inFile);
break;
case (int)MIDI_EVENT_TYPES.TEMPO:
int nomenator = (int)MIDI_EVENT_TYPES.MICROSECONDS_PER_MINUTE;
int denomenator = (int)ParseMetaValue(inFile);
float tempo = (float)nomenator/ (float)denomenator; // bpm
midi_event.data = tempo;
this.header.tempo = tempo; // set song tempo here!!!!
break;
case (int)MIDI_EVENT_TYPES.SMPTE_OFFSET:
data = ParseMetaData(inFile);
// TODO: parse [firstByte, minute, second, frame, subframe]
midi_event.data = data;
break;
case (int)MIDI_EVENT_TYPES.TIME_SIGNATURE:
data = ParseMetaData(inFile);
Dictionary<String,Int32> signature = new Dictionary<string, int>();
signature.Add("numerator", data[0]);
signature.Add("denumerator", (int)Math.Pow((double)data[1], (double)2.0));
midi_event.data = signature;
break;
case (int)MIDI_EVENT_TYPES.KEY_SIGNATURE:
data = ParseMetaData(inFile);
int _key = (data[0] ^ 128) - 128; // convert from unsigned byte to signed byte
int _scale = data[1]; // if 0 -> major if 1 -> minor
Dictionary<string, string> key = new Dictionary<string, string>();
key.Add("key", ((KEY_VALUE_TO_NAME)_key).ToString());
key.Add ("scale", _scale == 0 ? "major" : "minor");
midi_event.data = key;
break;
case (int)MIDI_EVENT_TYPES.SEQ_SPECIFIC:
midi_event.data = ParseMetaData(inFile);
break;
default:
Debug.LogWarning("ignoring unknown meta event on track number");
midi_event.data = ParseMetaData(inFile);
break;
}
}
MIDINote ParseNoteOffEvent(FileStream inFile, MIDIEvent midi_event)
{
MIDINote note;
if(inFile != null){
note = new MIDINote(midi_event);
note.note = (UInt32)inFile.ReadByte();
note.velocity = (UInt32)inFile.ReadByte();
}else{
note = (MIDINote)midi_event;
}
if(this.currentNotes.ContainsKey(note.note) ){
this.currentNotes[note.note].duration = CurrentTime() - note.absoluteStartTime;
this.currentNotes.Remove(note.note);
}else{
Debug.LogWarning("try to access not existing note: " + note.note);
}
return note;
}
public override string ToString()
{
return("MIDIEvent: " + MIDIEvent.ToString() + " - TimeBeats: " + TimeBeats + " - DurationBeats: " + DurationBeats);
}
/*public MIDIObject(byte[] data, bool strict)
: this(data)
{
this.trulystrict = strict;
}*/
private void LoadMIDI(byte[] data)
{
MemoryStream ms = new MemoryStream(data);
BinaryReader br = new BinaryReader(ms);
List<Track> tracks = new List<Track>();
//=======Load header======
//Confirm 'MThd'
if (data[0] != 0x4D) throw new InvalidMIDIFileException();
if (data[1] != 0x54) throw new InvalidMIDIFileException();
if (data[2] != 0x68) throw new InvalidMIDIFileException();
if (data[3] != 0x64) throw new InvalidMIDIFileException();
br.ReadBytes(4); //Shift position 4 forward for rest of reading
//Header length
this.header.length = ReadInt(br);
//Format
int format = ReadShort(br);
switch (format)
{
case 0: this.header.format = Format.SingleTrack; throw new UnsupportedMIDIFileException();
case 1: this.header.format = Format.MultiTrack; break;
case 2: this.header.format = Format.MultiSong; throw new UnsupportedMIDIFileException();
default: throw new UnsupportedMIDIFileException();
}
//Tracks
this.header.tracks = ReadShort(br);
//Delta-time
this.header.ticksPerQuarterNote = ReadShort(br);
//======Load tracks=======
for (int tracknumber = 0; tracknumber < this.header.tracks; tracknumber++)
{
Msg("Track number: " + tracknumber);
Track track = new Track();
//=======Load header=====
byte[] trackheaderstart = br.ReadBytes(4);
if (trackheaderstart[0] != 0x4D) throw new UnreadableTrackException();
if (trackheaderstart[1] != 0x54) throw new UnreadableTrackException();
if (trackheaderstart[2] != 0x72) throw new UnreadableTrackException();
if (trackheaderstart[3] != 0x6B) throw new UnreadableTrackException();
track.datalength = ReadInt(br);
track.data = br.ReadBytes(track.datalength);
//======Load track events======
BinaryReader tbr = new BinaryReader(new MemoryStream(track.data));
bool readingtrack = true;
byte prevcommand = 0x00;
List<Event> events = new List<Event>();
while (readingtrack)
{
Event ev = new Event();
ev.time = ReadVariable(tbr);
byte command = tbr.ReadByte();
Msg(ev.time + " Command " + command);
if (command >= 0x80)
{
if (command == 0xFF)
{
byte metacommand = tbr.ReadByte();
Msg("Meta: " + command);
ev.type = EventType.Meta;
ev.midiEvent = new MIDIEvent();
ev.midiEvent.midiType = MidiType.none;
switch (metacommand) //-------Check for meta-events
{
case 0x00: //Sequence number
{
ev.metaType = MetaType.SequenceNumber;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
break;
}
case 0x01: //Text event
{
ev.metaType = MetaType.Text;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
break;
}
case 0x02: //Copyright info
{
ev.metaType = MetaType.Text;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
break;
}
case 0x03: //Track name
{
ev.metaType = MetaType.TrackName;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
track.name = Encoding.ASCII.GetString(ev.data);
break;
}
case 0x04: //Instrument name
{
ev.metaType = MetaType.InstrumentName;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
break;
}
case 0x05: //Lyric text
{
ev.metaType = MetaType.Lyric;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
break;
}
case 0x06: //Marker
{
ev.metaType = MetaType.Marker;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
break;
}
case 0x07: //Cue point
{
ev.metaType = MetaType.Cue;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
break;
}
case 0x2F: //End of track
{
ev.metaType = MetaType.EndOfTrack;
readingtrack = false;
ev.data = tbr.ReadBytes(1);
break;
}
case 0x51: //Set tempo - I don't get how this shit works
{
ev.metaType = MetaType.Tempo;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
break;
}
case 0x58: //Time signature
{
ev.metaType = MetaType.TimeSignature;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
break;
}
case 0x59: //Key signature
{
ev.metaType = MetaType.KeySignature;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
break;
}
case 0x7F: //Sequencer specific
{
ev.metaType = MetaType.Specific;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
break;
}
case 0xF8: //Timing clock
{
ev.metaType = MetaType.TimingClock;
break;
}
case 0xFA: //Start sequence
{
ev.metaType = MetaType.StartSequence;
break;
}
case 0xFB: //Continue sequence
{
ev.metaType = MetaType.ContinueSequence;
break;
}
case 0xFC: //Stop sequence
{
ev.metaType = MetaType.StopSequence;
break;
}
default: //----------Unrecognized event
if (strict && metacommand != 0x21 && metacommand != 0x48) throw new UnrecognizedEventException();
else
{
int length = ReadByte(tbr);
tbr.ReadBytes(length);
}
break;
}
}
else //MIDI event
{
ev.type = EventType.Midi;
ev.metaType = MetaType.none;
MIDIEvent mev = new MIDIEvent();
mev.note = new Note();
string binary = Convert.ToString(command, 2);
Msg("Binary: " + binary);
while (binary.Length < 8) { binary = "0" + binary; }
mev.channel = Convert.ToInt32(Convert.ToUInt32(binary.Substring(4, 4), 2));
mev.controllerNumber = 0;
mev.note.number = 0;
mev.value = 0;
switch (binary.Substring(0, 4))
{
case "1000": //Note off
mev.midiType = MidiType.NoteOff;
mev.note.number = ReadByte(tbr);
mev.note.velocity = ReadByte(tbr);
break;
case "1001": //Note on
mev.midiType = MidiType.NoteOn;
mev.note.number = ReadByte(tbr);
mev.note.velocity = ReadByte(tbr);
break;
case "1010": //Key after-touch
mev.midiType = MidiType.KeyAfterTouch;
mev.note.number = ReadByte(tbr);
mev.note.velocity = ReadByte(tbr);
break;
case "1011": //Control change
mev.midiType = MidiType.ControlChange;
mev.controllerNumber = ReadByte(tbr);
mev.value = ReadByte(tbr);
break;
case "1100": //Patch change
mev.midiType = MidiType.PatchChange;
mev.value = ReadByte(tbr);
break;
case "1101": //Channel after-touch
mev.midiType = MidiType.ChannelAfterTouch;
mev.value = ReadByte(tbr);
break;
case "1110": //Pitch wheel change
mev.midiType = MidiType.PitchWheelChange;
mev.value = Convert.ToInt32(tbr.ReadUInt16()); //Yeah, this one is Little Endian. Great consistency.
break;
case "1111": //Sysex event
mev.midiType = MidiType.none;
ev.type = EventType.Sysex;
int length = ReadByte(tbr);
ev.data = tbr.ReadBytes(length);
break;
default:
mev.midiType = MidiType.none;
if (strict/* && command != 0x00*/) throw new UnrecognizedEventException();
break;
}
//Fill in extra note information
if (mev.note.number != 0)
{
mev.note.octave = Convert.ToInt32(Math.Floor((double)mev.note.number / 12));
mev.note.type = (NoteType)(mev.note.number % 12);
}
else
{
mev.note.octave = 0;
}
ev.midiEvent = mev;
}
prevcommand = command;
}
//--------------------------------------------------------------------------------
else //Repeat MIDI command
{
byte firstdata = command;
command = prevcommand;
//Ugly copypasta from above - should be done better
ev.type = EventType.Midi;
ev.metaType = MetaType.none;
MIDIEvent mev = new MIDIEvent();
mev.note = new Note();
string binary = Convert.ToString(command, 2);
Msg("Binary: " + binary);
while (binary.Length < 8) { binary = "0" + binary; }
mev.channel = Convert.ToInt32(Convert.ToUInt32(binary.Substring(4, 4)));
mev.controllerNumber = 0;
mev.note.number = 0;
mev.value = 0;
switch (binary.Substring(0, 4))
{
case "1000": //Note off
mev.midiType = MidiType.NoteOff;
mev.note.number = Convert.ToInt32(Convert.ToUInt32(firstdata));
//mev.note.velocity = ReadByte(tbr);
mev.note.velocity = ReadByte(tbr);
break;
case "1001": //Note on
mev.midiType = MidiType.NoteOn;
mev.note.number = Convert.ToInt32(Convert.ToUInt32(firstdata));
mev.note.velocity = ReadByte(tbr);
break;
case "1010": //Key after-touch
mev.midiType = MidiType.KeyAfterTouch;
mev.note.number = Convert.ToInt32(Convert.ToUInt32(firstdata));
mev.note.velocity = ReadByte(tbr);
break;
case "1011": //Control change
mev.midiType = MidiType.ControlChange;
mev.controllerNumber = Convert.ToInt32(Convert.ToUInt32(firstdata));
mev.value = ReadByte(tbr);
break;
case "1100": //Patch change
mev.midiType = MidiType.PatchChange;
mev.value = Convert.ToInt32(Convert.ToUInt32(firstdata));
break;
case "1101": //Channel after-touch
mev.midiType = MidiType.ChannelAfterTouch;
mev.value = Convert.ToInt32(Convert.ToUInt32(firstdata));
break;
case "1110": //Pitch wheel change
mev.midiType = MidiType.PitchWheelChange;
//mev.value = Convert.ToInt32(tbr.ReadUInt16()); //Yeah, this one is Little Endian. Great consistency.
mev.value = Convert.ToInt32(tbr.ReadByte() * 256 + Convert.ToUInt32(firstdata));
break;
case "1111": //Sysex event
mev.midiType = MidiType.none;
ev.type = EventType.Sysex;
int length = Convert.ToInt32(Convert.ToUInt32(firstdata));
ev.data = tbr.ReadBytes(length);
break;
default:
mev.midiType = MidiType.none;
if (strict/* && command != 0x00*/) throw new UnrecognizedEventException();
break;
}
//Fill in extra note information
if (mev.note.number != 0)
{
mev.note.octave = Convert.ToInt32(Math.Floor((double)mev.note.number / 12));
mev.note.type = (NoteType)(mev.note.number % 12);
}
else
{
mev.note.octave = 0;
}
ev.midiEvent = mev;
}
//Add just specified event to list of events
events.Add(ev);
}
//Add just specified list of events to track
track.events = events.ToArray();
//Add just specified track to list of tracks
tracks.Add(track);
tbr.Close(); //Close the track binary reader
}
//Store the tracks
this.tracks = tracks.ToArray();
AnalyzeMIDI();
loaded = true;
br.Close(); //Close binaryreader
ms.Close(); //Close memorystream
}
private void programChange(MIDIEvent evnt)
{
line.AppendFormat("@{0}", evnt.data[0]);
}
void ParseMetaEvent(FileStream inFile, MIDIEvent midi_event)
{
int type = inFile.ReadByte();
midi_event.event_type = type;
byte[] data;
switch (type)
{
case (int)MIDI_EVENT_TYPES.SEQ_NUMBER:
midi_event.data = ParseMetaValue(inFile);
break;
case (int)MIDI_EVENT_TYPES.TEXT:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.COPYRIGHT:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.SEQ_NAME:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.INSTRUMENT_NAME:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.LYRICS:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.MARKER:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.CUE_POINT:
midi_event.data = ParseMetaText(inFile);
break;
case (int)MIDI_EVENT_TYPES.CHANNEL_PREFIX:
midi_event.data = ParseMetaValue(inFile);
break;
case (int)MIDI_EVENT_TYPES.END_OF_TRACK:
midi_event.data = ParseMetaData(inFile);
break;
case (int)MIDI_EVENT_TYPES.TEMPO:
int nomenator = (int)MIDI_EVENT_TYPES.MICROSECONDS_PER_MINUTE;
int denomenator = (int)ParseMetaValue(inFile);
float tempo = (float)nomenator / (float)denomenator; // bpm
midi_event.data = tempo;
this.header.tempo = tempo; // set song tempo here!!!!
break;
case (int)MIDI_EVENT_TYPES.SMPTE_OFFSET:
data = ParseMetaData(inFile);
// TODO: parse [firstByte, minute, second, frame, subframe]
midi_event.data = data;
break;
case (int)MIDI_EVENT_TYPES.TIME_SIGNATURE:
data = ParseMetaData(inFile);
Dictionary <String, Int32> signature = new Dictionary <string, int>();
signature.Add("numerator", data[0]);
signature.Add("denumerator", (int)Math.Pow((double)data[1], (double)2.0));
midi_event.data = signature;
break;
case (int)MIDI_EVENT_TYPES.KEY_SIGNATURE:
data = ParseMetaData(inFile);
int _key = (data[0] ^ 128) - 128; // convert from unsigned byte to signed byte
int _scale = data[1]; // if 0 -> major if 1 -> minor
Dictionary <string, string> key = new Dictionary <string, string>();
key.Add("key", ((KEY_VALUE_TO_NAME)_key).ToString());
key.Add("scale", _scale == 0 ? "major" : "minor");
midi_event.data = key;
break;
case (int)MIDI_EVENT_TYPES.SEQ_SPECIFIC:
midi_event.data = ParseMetaData(inFile);
break;
default:
Debug.LogWarning("ignoring unknown meta event on track number");
midi_event.data = ParseMetaData(inFile);
break;
}
}
MIDITrack ParseTrack(FileStream inFile)
{
MIDITrack track = new MIDITrack();
// MThd
{
byte[] _mtrk = new byte[4];
inFile.Read(_mtrk, 0, 4);
Array.Reverse(_mtrk);
track.MTrk = BitConverter.ToUInt32(_mtrk, 0);
if (track.MTrk != (UInt32)MIDI_EVENT_TYPES.TRACK_CHUNK_ID)
{
throw new Exception("wrong track header");
}
}
// track length
{
byte[] _len = new byte[4];
inFile.Read(_len, 0, 4);
Array.Reverse(_len);
track.track_length = BitConverter.ToUInt32(_len, 0);
}
// start reading events
long pos = inFile.Position;
this.timeOffset = 0;
while (inFile.Position < pos + track.track_length)
{
int deltaTime = ParseVarLen(inFile);
this.timeOffset += deltaTime;
MIDIEvent midi_event = new MIDIEvent();
midi_event.delta_time = deltaTime;
midi_event.event_type = inFile.ReadByte();
switch (midi_event.event_type)
{
case (int)MIDI_EVENT_TYPES.META_EVENT:
ParseMetaEvent(inFile, midi_event);
// Debug.Log("Meta event");
break;
case (int)MIDI_EVENT_TYPES.SYSEX_EVENT:
case (int)MIDI_EVENT_TYPES.SYSEX_CHUNK:
ParseSysexEvent(inFile, midi_event);
// Debug.Log("Sysex event");
break;
default:
midi_event = ParseChannelEvent(inFile, midi_event);
// Debug.Log("channel event");
break;
}
Debug.Log(midi_event);
track.events.Add(midi_event);
}
return(track);
}
void MIDISongListener.OnSongEvent(MIDIEvent midiEvent, int trackNumber)
{
}
public MIDINote(MIDIEvent e)
{
this.delta_time = e.delta_time;
this.data = e.data;
this.event_type = e.event_type;
}
private void pitchBend(MIDIEvent evnt)
{
}
MIDIEvent ParseChannelEvent(FileStream inFile, MIDIEvent midi_event)
{
int event_type_mask = (midi_event.event_type & 0xF0);
//int event_channel = (midi_event.event_type & 0x0f) + 1;
var midi_event_new = midi_event;
switch(event_type_mask){
case (int)MIDI_EVENT_TYPES.NOTE_ON:
Debug.Log("note on");
midi_event_new = ParseNoteOnEvent(inFile, midi_event);
break;
case (int)MIDI_EVENT_TYPES.NOTE_OFF:
midi_event_new = ParseNoteOffEvent(inFile, midi_event);
Debug.Log("note off");
break;
case (int)MIDI_EVENT_TYPES.NOTE_AFTERTOUCH:
Debug.Log("after touch");
break;
case (int)MIDI_EVENT_TYPES.CONTROLLER:
Debug.Log("controller");
break;
case (int)MIDI_EVENT_TYPES.PROGRAM_CHANGE:
Debug.Log("program change");
break;
case (int)MIDI_EVENT_TYPES.CHANNEL_AFTERTOUCH:
Debug.Log("channel aftertouch");
break;
case (int)MIDI_EVENT_TYPES.PITCH_BEND:
Debug.Log("pitchbend");
break;
}
return midi_event_new;
}
private void channelTouch(MIDIEvent evnt)
{
}
// filepath starts from base application folder
public void ParseMIDIFile(string filePath, bool parseNoteOffEvents = false)
{
fileToParse = File.ReadAllBytes (Application.dataPath + filePath);
List<MIDIEvent> eventList = new List<MIDIEvent>();
string s = System.Convert.ToString (fileToParse[12], 2).PadLeft (8, '0') + System.Convert.ToString (fileToParse[13], 2).PadLeft (8, '0');
float ticksPerQuarterNote = (float)System.Convert.ToInt32 (s, 2);
float millisecondsPerTick = 60000 / (beatsPerMinute * ticksPerQuarterNote);
int i = 18; // position after header block
while (i < fileToParse.Length) {
s = System.Convert.ToString (fileToParse[i], 2).PadLeft (8, '0');
Debug.Log (i + " " + s);
if (s.StartsWith("10010000") && System.Convert.ToString(fileToParse[i+1], 2).PadLeft(8, '0').StartsWith("01000100")) {
float deltaTimeInMilliseconds = GetDeltaTimeForEvent(i) * millisecondsPerTick;
if (eventList.Count == 0) {
MIDIEvent midiEvent = new MIDIEvent(deltaTimeInMilliseconds, deltaTimeInMilliseconds);
eventList.Add (midiEvent);
Debug.Log (i + " here");
} else {
MIDIEvent midiEvent = new MIDIEvent(deltaTimeInMilliseconds, eventList[eventList.Count - 1].TimeFromBeginning () + deltaTimeInMilliseconds);
eventList.Add (midiEvent);
Debug.Log (i + " here");
}
noteOn = true;
i += 3;
} else if (s.StartsWith ("10000000") && System.Convert.ToString(fileToParse[i+1], 2).PadLeft(8, '0').StartsWith("01000100") && noteOn) {
float deltaTimeInMilliseconds = GetDeltaTimeForEvent(i) * millisecondsPerTick;
if (eventList.Count == 0) {
MIDIEvent midiEvent = new MIDIEvent(deltaTimeInMilliseconds, deltaTimeInMilliseconds, "NoteOff");
eventList.Add (midiEvent);
} else {
MIDIEvent midiEvent = new MIDIEvent(deltaTimeInMilliseconds, eventList[eventList.Count - 1].TimeFromBeginning () + deltaTimeInMilliseconds, "NoteOff");
eventList.Add (midiEvent);
}
noteOn = false;
i += 3;
}
i++;
}
StreamWriter outputStream;
filePath = filePath.Remove (filePath.IndexOf (".mid"));
filePath = filePath.Trim ().Replace ("/Resources/", "");
outputStream = new StreamWriter (Application.dataPath.Trim().Replace("/MIDIParser/Assets", "") + "/Assets/Resources/BeatConfig/" + filePath + ".txt", false);
float timeFromLastEventBuffer = 0;
int cumulativeTime = 0;
for (i = 0; i < eventList.Count ; i++) {
if (eventList [i].EventType () == "NoteOn") {
int timeElapsed = (int)System.Math.Round(timeFromLastEventBuffer + eventList [i].TimeFromLastEvent ());
cumulativeTime += timeElapsed;
s = eventList [i].EventType () + "," + timeElapsed + "," + cumulativeTime;
outputStream.WriteLine (s);
outputStream.Flush ();
timeFromLastEventBuffer = 0;
} else if (eventList[i].EventType() == "NoteOff") {
if (parseNoteOffEvents) {
int timeElapsed = (int)System.Math.Round(timeFromLastEventBuffer + eventList [i].TimeFromLastEvent ());
cumulativeTime += timeElapsed;
s = eventList [i].EventType () + "," + timeElapsed + "," + cumulativeTime;
outputStream.WriteLine (s);
outputStream.Flush ();
timeFromLastEventBuffer = 0;
} else {
timeFromLastEventBuffer = eventList [i].TimeFromLastEvent ();
}
} else {
outputStream.WriteLine("Unexpected event");
outputStream.Flush();
}
}
}
void MIDIDeviceListener.OnDeviceEvent(MIDIEvent midiEvent)
{
if (midiEvent.GetType() == typeof(MIDINoteEvent))
{
MIDINoteEvent noteEvent = midiEvent as MIDINoteEvent;
if (noteEvent.isNoteOn)
{
if (m_isEnabled)
{
m_deviceNoteTimestamps.Add(noteEvent.note, m_elapsedTime);
}
m_songVisualizer.StartNoteEffect(noteEvent.note);
bool isCorrectHit = false;
if (m_isRightHandEnabled)
{
foreach (MIDINoteEvent rightHandSongNote in m_rightHandSongNotes)
{
if (rightHandSongNote.note == noteEvent.note)
{
if (m_elapsedTime >= (rightHandSongNote.timestamp - m_noteHitTimingThreshold / 2.0f) &&
m_elapsedTime <= (rightHandSongNote.timestamp + m_noteHitTimingThreshold / 2.0f))
{
isCorrectHit = true;
break;
}
}
}
}
if (m_isLeftHandEnabled)
{
foreach (MIDINoteEvent leftHandSongNote in m_leftHandSongNotes)
{
if (leftHandSongNote.note == noteEvent.note)
{
if (m_elapsedTime >= (leftHandSongNote.timestamp - m_noteHitTimingThreshold / 2.0f) &&
m_elapsedTime <= (leftHandSongNote.timestamp + m_noteHitTimingThreshold / 2.0f))
{
isCorrectHit = true;
break;
}
}
}
}
if (isCorrectHit)
{
m_songVisualizer.ChangeNoteEffectColor(noteEvent.note, m_wrongHitColor);
}
else
{
m_songVisualizer.ChangeNoteEffectColor(noteEvent.note, m_correctHitColor);
}
}
else
{
m_songVisualizer.StopNoteEffect(noteEvent.note);
}
}
}
private MIDI ConvertToFormat1(MIDI src)
{
try
{
Track srcTrack = src.TrackList[0];
var newTracks = new List <Track>();
int cnt = 0; // event counter
var eventlist = new LinkedList <Event>();
uint deltaTime = 0;
// Create Conductor track
foreach (Event ev in srcTrack.EventList)
{
deltaTime += ev.DeltaTime;
if (ev is MetaEvent)
{
MetaEvent modEv;
if (ev is SetTempo)
{
var st = (SetTempo)ev;
modEv = new SetTempo(deltaTime, st.Value);
}
else if (ev is TimeSignature)
{
var ts = (TimeSignature)ev;
modEv = new TimeSignature(deltaTime, ts.Numerator, ts.DenominatorBitShift, ts.MIDIClockPerMetronomeTick, ts.NumberOfNotesPerClocks);
}
else if (ev is KeySignature)
{
var ks = (KeySignature)ev;
modEv = new KeySignature(deltaTime, ks.SignatureNumber, ks.MinorFlagNumber);
}
else if (ev is SequenceTrackName)
{
var stn = (SequenceTrackName)ev;
modEv = new SequenceTrackName(deltaTime, stn.Name);
}
else if (ev is EndOfTrack)
{
modEv = new EndOfTrack(deltaTime);
}
else
{
modEv = new MetaEvent(deltaTime);
}
eventlist.AddLast(modEv);
deltaTime = 0;
if (!(ev is EndOfTrack))
{
cnt++;
}
}
}
newTracks.Add(new Track(eventlist));
eventlist = new LinkedList <Event>();
deltaTime = 0;
// Create System Setup track
foreach (Event ev in srcTrack.EventList)
{
deltaTime += ev.DeltaTime;
if (ev is SysExEvent)
{
eventlist.AddLast(new SysExEvent(deltaTime));
deltaTime = 0;
cnt++;
}
else if (ev is EndOfTrack)
{
eventlist.AddLast(new EndOfTrack(deltaTime));
}
}
newTracks.Add(new Track(eventlist));
// Create Notes track
for (int ch = 0; cnt + 1 < srcTrack.EventList.Count; ch++)
{
eventlist = new LinkedList <Event>();
deltaTime = 0;
foreach (Event ev in srcTrack.EventList)
{
deltaTime += ev.DeltaTime;
if (ev is MIDIEvent)
{
var midiEv = (MIDIEvent)ev;
if (midiEv.Channel == ch)
{
MIDIEvent modEv;
if (midiEv is NoteOn)
{
var nton = (NoteOn)midiEv;
modEv = new NoteOn(deltaTime, nton.Channel, nton.Number, nton.Velocity);
}
else if (midiEv is NoteOff)
{
var ntoff = (NoteOff)midiEv;
modEv = new NoteOff(deltaTime, ntoff.Channel, ntoff.Number, ntoff.Velocity);
}
else if (midiEv is ProgramChange)
{
var pc = (ProgramChange)midiEv;
modEv = new ProgramChange(deltaTime, pc.Channel, pc.Number);
}
else if (midiEv is Volume)
{
var vol = (Volume)midiEv;
modEv = new Volume(deltaTime, vol.Channel, vol.Value);
}
else if (midiEv is Pan)
{
var pan = (Pan)midiEv;
modEv = new Pan(deltaTime, pan.Channel, pan.Value);
}
else if (midiEv is ControlChange)
{
var cc = (ControlChange)midiEv;
modEv = new ControlChange(deltaTime, cc.Channel, cc.Value);
}
else
{
modEv = new MIDIEvent(deltaTime, midiEv.Channel);
}
eventlist.AddLast(modEv);
deltaTime = 0;
cnt++;
}
}
else if (ev is EndOfTrack)
{
eventlist.AddLast(new EndOfTrack(deltaTime));
}
}
newTracks.Add(new Track(eventlist));
}
return(new MIDI(newTracks, 1, newTracks.Count, src.TimeDivision));
}
catch (Exception ex)
{
throw new Exception(Resources.ErrorMIDIFormat1, ex);
}
}